<!DOCTYPE html>
<html lang="zh-cmn-Hans">
<head>
    <meta charset="UTF-8">
    <title>500 - 服务器错误</title>
    <meta content="width=device-width, maximum-scale=1, initial-scale=1" name="viewport"/>
    <style>
        html, body {
            height: 100%;
        }

        body {
            color: #333;
            margin: auto;
            padding: 1em;
            display: table;
            user-select: none;
            box-sizing: border-box;
            font: lighter 20px "微软雅黑";
        }

        a {
            color: #3498db;
            text-decoration: none;
        }

        h1 {
            margin-top: 0;
            font-size: 3.5em;
        }

        main {
            margin: 0 auto;
            text-align: center;
            display: table-cell;
            vertical-align: middle;
        }

        .btn {
            color: #fff;
            padding: .75em 1em;
            background: #3498db;
            border-radius: 1.5em;
            display: inline-block;
            transition: opacity .3s, transform .3s;
        }

        .btn:hover {
            transform: scale(1.1);
        }

        .btn:active {
            opacity: .7;
        }
    </style>
</head>
<body>
<main>
    <h1>:'(</h1>
    <p>服务器开小差啦！管理员正在修理中...</p>
    <p>还请阁下静候站点恢复~</p>
</main>
</body>
</html>